Filter bag for water treatment

Abstract

The invention discloses a filter bag for water treatment. The filter bag is a hollow barrel structure, an inner diameter of the filter bag is gradually increased from two sides to middle, a first filter layer and a second filter layer are arranged at openings at two ends of the filter bag, and a third filter layer is arranged in the middle of the filter bag; the third filter layer is made of dust-removal filter cloth, and the dust-removal filter cloth is formed by knitting warp-wise yarns and broad-wise yarns in a dual-structure; the warp-wise yarn adopts polyester monofilament, and the broad-wise yarn is a dual-embedding structure, and comprises the core material; the core material adopts at least one of polyester monofilament or basalt fiber or composite fiber, and a reinforcement layerwraps up the core material. The inner diameter of the filter bag is gradually increased to the middle from two sides, the filter speed can be initially and automatically adjusted through bore change,the filter effect is reinforced through the first filter layer, the second filter layer and the third filter layer, the resistance to pressure is strong, and the operation is easy.

Description

technical field [0001] The invention relates to the technical field of textile chemical industry, in particular to a filter bag for water treatment. Background technique [0002] Today's environmental protection has attracted more and more attention, and in recent years, environmental degradation is an important problem that plagues us. Water pollution has caused great harm to human health. About 1 billion people in developing countries drink unclean water, and more than 25 million people die from drinking unclean water every year. In the world, an average of 5,000 children die from drinking unclean water every day, and about 170 million people drink water polluted by organic substances. Water, 300 million urban residents face water pollution. Epidemiological surveys in high-incidence areas of liver cancer have shown that drinking water polluted by algal toxins is the main cause of liver cancer. [0003] The severity of water pollution around the world depends primarily o...

AI Technical Summary

Problems solved by technology

Therefore, the purification of water body is also particularly important. In sewage purification treatment, filtration is the most critical link. However, most of them currently use filter cloth or filter element for filtration. The filter cloth has poor filtering effect, low pressure resistance, and slow filtration speed. Single method, can only remove large particles of impurities, small particles are difficult to remove

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